Soldiers crossing the river Ancre, Battle of the Somme, France, World War I, 1916.Artist: Realistic Travels Publishers [Getty Images]

Soldiers crossing the river Ancre, Battle of the Somme, France, World War I, 1916. Scene during the Allied attack on Thiepval Ridge. Stereoscopic card detail. (Photo by The Print Collector/Print Collector/Getty Images)

Hulton Archive Print Collector